GSO OIML R60-1:2021
OIML R60-1:2016
Gulf Standard
Current Edition
·
Approved on
01 July 2021
Metrological regulation for load cells Part 1: Metrological and technical requirements
GSO OIML R60-1:2021 Files
English
23 Pages
Current Edition
Reference Language
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GSO OIML R60-1:2021 Scope
This Recommendation prescribes the principal metrological static r 2.1 equirements and static
evaluation procedures for load cells used in the determination of conformity to this Recommendation.
It is intended to provide authorities with uniform means for determining the metrological
characteristics of load cells used in measuring instruments that are subjected to metrological controls.
It is acknowledged that test procedures found in OIML R 60-2 are useful in the evaluation of load
cells that are currently in service (i.e. primarily of the strain gauge design) however, there may be
variations in designs for load cells that will require additional or modified test procedures to
appropriately evaluate them. These additional test procedures may be annexed when necessary.
Except where otherwise specified, these requirements apply regardless of the technology or operating
principle employed. The requirements and evaluation procedures in this Recommendation have been
drafted to be non-specific with regard to load cell design and their operating principles.
2.2 This Recommendation utilizes the principle that several measurement errors shall be considered
together when applying load cell performance characteristics to the permitted error envelope. Thus, it
is not considered appropriate to specify individual errors for given characteristics (e.g. non-linearity,
hysteresis, effects of influence factors), but rather to consider the total error envelope allowed for a
load cell as the limiting factor. The use of an error envelope allows the balancing of the individual
contributions to the total error of measurement while still achieving the intended final result.
Note: The error envelope may be defined as the boundary of the combined individual errors (see
Table 4) as a function of the force introduced by the applied load (expressed in mass units)
over the measuring range. The combined error determined may be positive or negative and
include the effects of non-linearity, hysteresis and temperature.
2.3 “Weighing modules” as noted in OIML R 76 [1], T.2.2.7 (see R 60, Annex A, A.2.1), are not
covered by this Recommendation. Weighing instruments that include load cells and which give an
indication of mass are the subjects of separate Recommendations. While digital load cells may be
covered under this Recommendation, a load cell that produces an output consisting of more than
digital “raw counts” is not covered. In the illustration from OIML R 76 below, the scope of R 60
would not extend beyond module #3.
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